现在趋势

IntelliJ IDEA，JetBrains IDE

May 6

This is a general heads-up that jtreg 7.4 is ready for use and that we should soon update JDK to use it. There are not many changes to the jtreg tool itself; the most significant change in jtreg 7.4 are bug fixes to detect more failures. more @ mail.openjdk.org/pipermail/jdk- #OpenJDK

Targeted to JDK 23: JEP 467: Markdown Documentation Comments: openjdk.org/jeps/467 #jdk23 #openjdk #java

新候选 JEP：JEP 472：准备限制 JNI 的使用： //openjdk.org/jeps/472 #openjdk #java

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提示：#IntelliJIDEATips 新功能：#NewInIntelliJIDEA 我们的 YT频道

新候选 JEP：JEP 471：弃用 sun.misc.Unsafe 中的内存访问方法以进行删除： //openjdk.org/jeps/471 #openjdk #java

针对 JDK 23：JEP 476：模块导入声明（预览）： # jdk23 #openjdk #java

针对 JDK 23：JEP 474：ZGC：默认分代模式： # jdk23 #openjdk #java

以下是 JDK 23 的时间表： 2024/06/06 缩减第一阶段 2024/07/18 缩减第二阶段 2024/08/08 初始候选版本 2024/08/22 最终候选版本 2024/09/17 正式发布更多 @ mail.openjdk.org/pipermail/jdk-dev/2024-April/008884.html # JDK23

提案：支持 Wayland 并添加 KEM API [..] 只有 Wayland 将在 RHEL 10 及后续版本中受支持。 [..] 我们还希望在 Java SE 17 中添加对某些后量子加密 (PQC) 算法所需功能的支持。更多

建议针对 JDK 23：JEP 476：模块导入声明（预览）： # jdk23 #openjdk #java

建议针对 JDK 23：JEP 474：ZGC：默认分代模式： # jdk23 #openjdk #java

针对 JDK 23：JEP 466：类文件 API（第二预览版）： # jdk23 #openjdk #java

New candidate JEP: JEP 474: ZGC: Generational Mode by Default: openjdk.org/jeps/474 #openjdk #java

New candidate JEP: JEP 475: Late Barrier Expansion for G1: openjdk.org/jeps/475 #openjdk #java

Targeted to JDK 23: JEP 473: Stream Gatherers (Second Preview): openjdk.org/jeps/473 #jdk23 #openjdk #java

Targeted to JDK 23: JEP 469: Vector API (Eighth Incubator): openjdk.org/jeps/469 #jdk23 #openjdk #java

New candidate JEP: JEP 476: Module Import Declarations (Preview): openjdk.org/jeps/476 #openjdk #java

JMC 9.0.0 General-Availability Release is here! Release Notes: oracle.com/java/technolog JMC Installation Instructions: oracle.com/java/technolog JMC User Guide: docs.oracle.com/en/java/java-c Downloads: jdk.java.net/jmc/9/ #OpenJDK #JDKMissionControl #JMC

I have updated the draft PR on the JFR contextual events and the accompanying description, if this is your cup of tea. Looking for comments! github.com/openjdk/jdk/pu

8325465: JFR: Context filtering by jbachorik · Pull Request #18689 · openjdk/jdk

#jfr #java #profiling #performance #jvm

Java users on macOS 14 running on Apple silicon systems should update directly to macOS 14.4.1. For further information: social.ora.cl/6007ZpyRh

Quote

Java

@java

Mar 16

Java users on macOS 14 running on Apple silicon systems should consider delaying the update to macOS 14.4. For further information: social.ora.cl/6018kbMIo

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New candidate JEP: JEP 469: Vector API (Eighth Incubator) openjdk.org/jeps/469 #openjdk #java #jdk23

Targeted to JDK 23: JEP 466: Class-File API (Second Preview): openjdk.org/jeps/466 #jdk23 #openjdk #java

New Project: Brisbane Project Brisbane proposes to create a Java Cryptographic Extension (JCE) provider for FIPS 140 regulated environments. more @ mail.openjdk.org/pipermail/anno Voting on the Brisbane Project with initial Lead Denis Gauthier is now closed. #OpenJDK #ProjectBrisbane

JDK Mission Control 9.0.0 source release available: hirt.se/blog/?p=1477 A big thank you to all the contributors!

JDK 22 Security Enhancements: seanjmullan.org/blog/2024/03/2 #jdk22 #openjdk #security

Proposed to target JDK 23: JEP 466: Class-File API (Second Preview): openjdk.org/jeps/466 #jdk23 #openjdk #java

Another small #Java22 change, discussion of common surprises encountered during decimal <-> binary conversion: docs.oracle.com/en/java/javase #OpenJDK

With #Java22 shipping today, a few small changes I worked on: * Class.forPrimitiveName to map between "int" and int.class, "double" and double.class, etc. * Elements.getEnumConstantBody for more informative modeling of enum types in javax.lang.mode. #OpenJDK

With every new #Java release, we try to thank FOSS projects that provided excellent testing feedback. For #Java22, I’d like to express thanks to:

@syncopeidm

@TheApacheTomcat

ApprovalsTest<dot>Java AssertJ Avaje

@JettyProject

MyBatis Parallel Collectors

@RxJava

#JDK #OpenJDK

Quote

Sharat Chander |

@Sharat_Chander

Mar 19

#Java 22 is now available!

Your

FREE

Multi-Platform

Production-Ready

Open Source

Binary Release made available from @oracle. Learn more

inside.java/2024/03/19/the #Java22 #JDK22 #OpenJDK #JDK

We are grateful to the many experienced developers who reviewed proposed changes, the early adopters who tried out early access builds and reported issues, and the dedicated professionals who provided feedback on the OpenJDK mailing lists. #OpenJDK#JDK22#JavaTogether

Tree map chart with issues fixed in JDK 22 per organization.

Legend:
AliBaba
Amazon
ARM
Azul
BellSoft
Canonical
Datadog
Fujitsu
Google
Huawei
IBM
Independent
Intel
ISCAS
JetBrains
Loongson
Microsoft
NTT Data
Oracle
Red Hat
Rivos
SAP
Tencent

137

OpenJDK JDK 22 General-Availability Release is here! Builds for Linux / AArch64: download.java.net/java/GA/jdk22/ Linux / x64: download.java.net/java/GA/jdk22/ macOS / AArch64: download.java.net/java/GA/jdk22/ macOS / x64: download.java.net/java/GA/jdk22/ Windows / x64: download.java.net/java/GA/jdk22/ #OpenJDK #JDK22

200

Release Notes: jdk.java.net/22/release-not And more @ jdk.java.net/22/ #OpenJDK #JDK22

Emulating C# LINQ in Java using Code Reflection openjdk.org/projects/babyl #OpenJDK #ProjectBabylon

Project Loom EA builds with changes to object monitor implementation to avoid pinning with virtual threads more @ mail.openjdk.org/pipermail/loom builds @ jdk.java.net/loom/ #OpenJDK #ProjectLoom

First JDK 22 Release Candidate: mail.openjdk.org/pipermail/jdk- downloads: jdk.java.net/22/ #JDK22 #Java22 #OpenJDK #TestItNow

JDK 22 has been forked from the main line and is now in Rampdown Phase One: mail.openjdk.org/pipermail/jdk- openjdk.org/projects/jdk/2 #OpenJDK #JDK22

Targeted to JDK 22: JEP 459: String Templates (Second Preview): openjdk.org/jeps/459 #jdk22 #openjdk #java

Proposed to target JDK 22: JEP 457: Class-File API (Preview): openjdk.org/jeps/457 #jdk22 #openjdk #java

Proposed to target JDK 22: JEP 463: Implicitly Declared Classes and Instance Main Methods (Second Preview): openjdk.org/jeps/463 #jdk22 #openjdk #java

Proposed to target JDK 22: JEP 423: Region Pinning for G1: openjdk.org/jeps/423 #jdk22 #openjdk #java

Proposed to target JDK 22: JEP 461: Stream Gatherers (Preview): openjdk.org/jeps/461 #jdk22 #openjdk #java

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Proposed to target JDK 22: JEP 462: Structured Concurrency (Second Preview): openjdk.org/jeps/462 #jdk22 #openjdk #java

Proposed to target JDK 22: JEP 458: Launch Multi-File Source-Code Programs: openjdk.org/jeps/458 #jdk22 #openjdk #java

Targeted to JDK 22: JEP 447: Statements before super(...) (Preview): openjdk.org/jeps/447 #jdk22 #openjdk #java

105

JDK 22 Early-Access Build 25 is here: jdk.java.net/22/ Release notes: jdk.java.net/22/release-not Issues addressed in this build: bugs.openjdk.org/issues/?jql=pr #OpenJDK #JDK22

JavaFX 22 Early-Access Builds Build 18 is here: jdk.java.net/javafx22/ Issues addressed in this build: bugs.openjdk.org/issues/?jql=pr JavaFX 22-ea is designed to work with JDK 22-ea, but it is known to work with JDK 17 and later versions. #OpenJDK#OpenJFX

VS Code plugin for OpenJDK development updated with JBS support Now you can check your open bugs directly from vscode, including seeing at-a-glance the latest added comment, and quickly going to the PR for issues in review. More @ mail.openjdk.org/pipermail/ide- #OpenJDK #VSCode

OpenJDK

freebsdfoundation.org/openjdk-contra

Nov 8, 2023

"To support these efforts, Oracle is announcing plans to open source Jipher through the OpenJDK to support Project Panama-based Java applications for the benefit of the broader open source community." oracle.com/news/announcem #OpenJDK #Jipher #ProjectPanama

The FreeBSD Foundation is searching for a contractor whose role will be to make FreeBSD/amd64 and FreeBSD/arm64 officially supported OpenJDK platforms. #BSDjobs #FreeBSD

@freebsdjobs

JDK 21 Security Enhancements: seanjmullan.org/blog/2023/09/2 #OpenJDK #JDK21

New candidate JEP: JEP 457: Class-File API (Preview): openjdk.org/jeps/457 #openjdk #java

123

New candidate JEP: JEP 456: Unnamed Variables and Patterns: openjdk.org/jeps/456 #openjdk #java

New candidate JEP: JEP 455: Primitive types in Patterns, instanceof, and switch (Preview): openjdk.org/jeps/455 #openjdk #java

JavaFX 22 Early-Access Builds Build 10 is here: jdk.java.net/javafx22/ Issues addressed in this build: bugs.openjdk.org/issues/?jql=pr JavaFX 22-ea is designed to work with JDK 22-ea, but it is known to work with JDK 17 and later versions. #OpenJDK #OpenJFX

JDK 22 Early-Access Build 16 is here: jdk.java.net/22/ Release notes: jdk.java.net/22/release-not This build removes deprecated sun.misc.Unsafe shouldBeInitialized and ensureClassInitialized methods Issues addressed in this build: bugs.openjdk.org/browse/JDK-831 #OpenJDK #JDK22

Here is the proposed schedule for JavaFX 22. RDP1: Jan 11, 2024 (aka “feature freeze”) RDP2: Feb 1, 2024 Freeze: Feb 29, 2024 GA: Mar 19, 2024 more @ mail.openjdk.org/pipermail/open #OpenJDK #OpenJFX

Here’s the proposed schedule for JDK 22: 2023/12/07 Rampdown Phase One 2024/01/18 Rampdown Phase Two 2024/02/08 Initial Release Candidate 2024/02/22 Final Release Candidate 2024/03/19 General Availability more @ mail.openjdk.org/pipermail/jdk- #OpenJDK #JDK22

Amidst the general #JDK21 news, a few other small changes: * FDLIBM fully ported from C to Java * For javac, -proc:full allows an explicit for the current default annotation processing policy, which may change in the future #OpenJDK

JavaFX 21 General-Availability Release is here! Builds for Linux / x64: download.java.net/java/GA/javafx macOS / AArch64: download.java.net/java/GA/javafx macOS / x64: download.java.net/java/GA/javafx Windows / x64: download.java.net/java/GA/javafx #OpenJDK #OpenJFX #JFX21

Release Notes: github.com/openjdk/jfx/bl And more @ jdk.java.net/javafx21/ #OpenJDK #OpenJFX #JFX21

OpenJDK JDK 21 General-Availability Release is here! Builds for Linux / AArch64: download.java.net/java/GA/jdk21/ Linux / x64: download.java.net/java/GA/jdk21/ macOS / AArch64: download.java.net/java/GA/jdk21/ macOS / x64: download.java.net/java/GA/jdk21/ Windows / x64: download.java.net/java/GA/jdk21/ #OpenJDK #JDK21

Release Notes: jdk.java.net/21/release-not And more @ jdk.java.net/21/ #OpenJDK #JDK21

158

#Java 21 is now available!

Your:

FREE

Multi-platform

Production-ready

Open source

Binary release ...made available by

@Oracle

Download #JDK21

jdk.java.net/21/ #OpenJDK #JDK #Java21

Headline: Java 21 Now Available.

The tile also features Duke the Java mascot holding the Ace and Jack of spades in Duke's left hand to signify the number 21.

225

We're just 1 day away from our #Java21 launch live stream! Join us tomorrow as we'll have experts share details around the latest release, with a few surprise reveals and guests along the way.

Details on how to join: social.ora.cl/6019PfgPZ

335

Hey #Java Developers,

The release of #Java21 is nigh! Let's take a look at the key changes coming in this release in two minutes... more or less Happy coding!

Java 21 in Two Minutes... more or less

Java 21 will be released this week. Let's take a quick look at the key features arriving in this release in two minutes... more or less.More info ➱ https://...

143

In this episode of Road to 21,

@ammbra1508

puts #Java under the microscope and shows you how Java Security has evolved since JDK 17. #Java21 social.ora.cl/6010P4i6Y

Set your car in DRIVE and get back on the road to #Java21!

@JosePaumard

is looking at the many enhancements that Java 21 is giving you in the classes you're using every day. social.ora.cl/6019P2BSH

230

Tools are the backbone of development, making our coding experience smoother. From #javac to #JFR, this #RoadTo21 video unveils the JDK tools updates that supercharge your #Java journey: youtu.be/nFJBVuaIsRg Discover what’s new and share your thoughts

A lot has changed with the JVM between JDK 17 and 21. In the latest episode of Road to 21,

@BillyKorando

examines the noteworthy changes, where performance has improved, and a big change to the Z Garbage Collector. social.ora.cl/6019PxRoT

220

We got something special for you: Put your #Java boots on and come with us on the #RoadTo21. First video goes live tomorrow. youtube.com/@java

137

Here’s a short slide deck which Vladimir Ivanov prepared to show how to use the AOT-optimizing features in the current Leyden premain branch with the Spring PetClinic application: openjdk.org/projects/leyde #OpenJDK #ProjectLeyden

Call for Discussion: New Project: Babylon

"Babylon's primary goal will be to extend the reach of Java to foreign programming models such as SQL, differentiable programming, machine learning models, & GPUs." #OpenJDK #Java inside.java/tag/babylon mail.openjdk.org/pipermail/disc

108

Excited for the #Java21 launch? So are we!

So much so that we'll be talking about it for 8 hours straight: technical explorations, expert interviews, and community voices at

@parisjug

and

@jugka

. Be there on Tuesday, Sep 19th, 1300-2100 UTC! Details: dev.java/community/java

189

JVMLS 2023 Keynote with

@gsaab

and

@mreinhold

JVM Language Summit 2023 Keynote #JVMLS

Presented by Georges Saab - Senior Vice President (Java Platform Group - Oracle), Chair (OpenJDK Governing Board) and Mark Reinhold - Chief Architect (Java P...

“Project Leyden - Capturing Lightning in a Bottle” by

@mreinhold

@JohnRose00

Project Leyden - Capturing Lightning in a Bottle #JVMLS

Presented by Mark Reinhold - Chief Architect (Java Platform Group - Oracle) & John Rose - JVM Senior Architect (Java Platform Group - Oracle) during the JVM ...

“Value Objects in Valhalla” by Dan Smith #JVMLS #OpenJDK #Java

Value Objects in Valhalla #JVMLS

Presented by Dan Smith - Senior Developer (Java Platform Group - Oracle) during the JVM Language Summit 2023 (Santa Clara CA).Project Valhalla ➱ https://open...

“Everything You Never Wanted to Know about Java Class Initialization” by Christian Wimmer #JVMLS #OpenJDK #Java

Everything You Never Wanted to Know about Java Class Initialization...

Presented by Christian Wimmer - Architect (GraalVM Team - Oracle) during the JVM Language Summit 2023 (Santa Clara CA).Make sure to check the https://www.you...

“Project Lilliput - Compressed Object Headers” by

@rkennke

#jvmls #Java #OpenJDK

Project Lilliput - Compressed Object Headers #JVMLS

Presented by Roman Kennke - Principal Engineer (Amazon) during the JVM Language Summit 2023 (Santa Clara CA).More informations➱ https://wiki.openjdk.org/dis...

“Generational ZGC and Beyond” by

@eosterlund_fisk

Generational ZGC and Beyond #JVMLS

Presented by Erik Österlund - Consulting Member of Technical Staff (Java Platform Group - Oracle) during the JVM Language Summit 2023 (Santa Clara CA).Make s...

“Code Reflection” by

Code reflection is a proposed enhancement to reflective programming in Java that enables standard access, analysis, and transformation of Java code.Code refl...

Code Reflection #JVMLS

“Continuations - Under the Covers” by

@pressron

#JVMLS #ProjectLoom #OpenJDK #Java

Continuations - Under the Covers #JVMLS

Presented by Ron Pressler - Architect (Java Platform Group - Oracle) during the JVM Language Summit 2023 (Santa Clara CA).⎯⎯⎯⎯⎯⎯ Resources ⎯⎯⎯⎯⎯⎯◦ https://y...

“The Challenges of Introducing Virtual Threads to the Java Platform” by Alan Bateman #JVMLS #ProjectLoom #OpenJDK #Java

The Challenges of Introducing Virtual Threads to the Java Platform -...

Presented by Alan Bateman - Architect (Java Platform Group - Oracle) during the JVM Language Summit 2023 (Santa Clara CA).⎯⎯⎯⎯⎯⎯ Resources ⎯⎯⎯⎯⎯⎯◦ JEP 444: ...

“A Classfile API for the JDK” by

@BrianGoetz

A Classfile API for the JDK #JVMLS

This session discusses an upcoming standard API for parsing, generating, and transforming Java class files.JEP draft: Class-File API (Preview) ➱ https://op...

“From CPU to GPU and FPGAs: Supercharging Java Applications with TornadoVM” by

@snatverk

From CPU to GPU and FPGAs: Supercharging Java Applications with...

Presented by Juan Fumero, PhD & Research Fellow (The University of Manchester, UK) during the JVM Language Summit 2023 (Santa Clara CA).More information on T...

“Java and GPU … are we nearly there yet?” by Gary Frost Recent (and proposed) JDK features that offer new Java GPGPU (general-purpose GPU) collaboration opportunities. #JVMLS #OpenJDK #Java

Java and GPU … are we nearly there yet? #JVMLS

This sessions discusses recent (and proposed) JDK features that (will) offer new Java GPGPU (general-purpose GPU) collaboration opportunities.Presented by Ga...

New mailing list to discuss development efforts for running #OpenJDK in containers. mail.openjdk.org/pipermail/cont

OpenJDK

Sep 15, 2023

John Rose on Using Computed Constants to Manage Static State in Leyden cr.openjdk.org/~jrose/leyden/ #OpenJDK #ProjectLeyden

JDK 21 G1/Parallel/Serial GC changes JDK 21 GA is on track - as well as this update for changes of the stop-the-world garbage collectors for OpenJDK for that release. ;) More @ tschatzl.github.io/2023/08/04/jdk #OpenJDK #JDK21

Java: Draft JEP: "ComputedConstant" is now public and is about superfast immutable value holders that can be initialized independently of when they are created. minborgsjavapot.blogspot.com/2023/08/java-n #java

JEP 452 introduces a developer-friendly cryptographic primitive that allows the sender and the receiver to agree on a secret key using a key encapsulation message.